TwistyPuzzleLib

import org.distorted.objectlib.main.ObjectType;

  void onBeginRotation(TwistyActivity act);

  void onFinishRotation(TwistyActivity act, int axis, int row, int angle);

  void failedToDrag(TwistyActivity act);

  int getCurrentColor();

  int cubitIsLocked(ObjectType type, int cubit);

  public abstract boolean isLocked();

///////////////////////////////////////////////////////////////////////////////////////////////////

// Copyright 2019 Leszek Koltunski                                                               //

//                                                                                               //

// This file is part of Magic Cube.                                                              //

//                                                                                               //

// Magic Cube is free software: you can redistribute it and/or modify                            //

// it under the terms of the GNU General Public License as published by                          //

// the Free Software Foundation, either version 2 of the License, or                             //

// (at your option) any later version.                                                           //

//                                                                                               //

// Magic Cube is distributed in the hope that it will be useful,                                 //

// but WITHOUT ANY WARRANTY; without even the implied warranty of                                //

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                                 //

// GNU General Public License for more details.                                                  //

//                                                                                               //

// You should have received a copy of the GNU General Public License                             //

// along with Magic Cube.  If not, see <http://www.gnu.org/licenses/>.                           //

///////////////////////////////////////////////////////////////////////////////////////////////////

package org.distorted.objectlib.main;

import java.lang.ref.WeakReference;

import android.util.DisplayMetrics;

import android.view.MotionEvent;

import org.distorted.library.main.QuatHelper;

import org.distorted.library.type.Static2D;

import org.distorted.library.type.Static4D;

import org.distorted.objectlib.helpers.ObjectStateActioner;

import org.distorted.objectlib.helpers.ObjectSurfaceView;

import org.distorted.objectlib.helpers.TwistyActivity;

///////////////////////////////////////////////////////////////////////////////////////////////////

public class ObjectControl

{

    public static final int NUM_SPEED_PROBES = 10;

    public static final int INVALID_POINTER_ID = -1;

    public static final int MODE_ROTATE  = 0;

    public static final int MODE_DRAG    = 1;

    public static final int MODE_REPLACE = 2;

    // Moving the finger from the middle of the vertical screen to the right edge will rotate a

    // given face by SWIPING_SENSITIVITY/2 degrees.

    public final static int SWIPING_SENSITIVITY  = 240;

    // Moving the finger by 0.3 of an inch will start a Rotation.

    public final static float ROTATION_SENSITIVITY = 0.3f;

    private final Static4D CAMERA_POINT = new Static4D(0, 0, 0, 0);

    private final WeakReference<TwistyActivity> mAct;

    private final ObjectStateActioner mActioner;

    private final ObjectPreRender mPreRender;

    private Movement mMovement;

    private boolean mDragging, mBeginningRotation, mContinuingRotation;

    private int mScreenWidth, mScreenHeight, mScreenMin;

    private float mRotAngle, mInitDistance;

    private float mStartRotX, mStartRotY;

    private float mAxisX, mAxisY;

    private float mRotationFactor;

    private int mLastCubitColor, mLastCubitFace, mLastCubit;

    private int mCurrentAxis, mCurrentRow;

    private float mCurrentAngle, mCurrRotSpeed;

    private final float[] mLastX;

    private final float[] mLastY;

    private final long[] mLastT;

    private int mFirstIndex, mLastIndex;

    private final int mDensity;

    private int mPointer1, mPointer2;

    private float mX1, mY1, mX2, mY2, mX, mY;

    private boolean mIsAutomatic;

    private static final Static4D mQuat= new Static4D(-0.25189602f,0.3546389f,0.009657208f,0.90038127f);

    private static final Static4D mTemp= new Static4D(0,0,0,1);

///////////////////////////////////////////////////////////////////////////////////////////////////

// cast the 3D axis we are currently rotating along (which is already casted to the surface of the

// currently touched face AND converted into a 4D vector - fourth 0) to a 2D in-screen-surface axis

    private void computeCurrentAxis(Static4D axis)

      {

      Static4D result = QuatHelper.rotateVectorByQuat(axis, mQuat);

      mAxisX =result.get0();

      mAxisY =result.get1();

      float len = (float)Math.sqrt(mAxisX*mAxisX + mAxisY*mAxisY);

      mAxisX /= len;

      mAxisY /= len;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private void addSpeedProbe(float x, float y)

      {

      long currTime = System.currentTimeMillis();

      boolean theSame = mLastIndex==mFirstIndex;

      mLastIndex++;

      if( mLastIndex>=NUM_SPEED_PROBES ) mLastIndex=0;

      mLastT[mLastIndex] = currTime;

      mLastX[mLastIndex] = x;

      mLastY[mLastIndex] = y;

      if( mLastIndex==mFirstIndex)

        {

        mFirstIndex++;

        if( mFirstIndex>=NUM_SPEED_PROBES ) mFirstIndex=0;

        }

      if( theSame )

        {

        mLastT[mFirstIndex] = currTime;

        mLastX[mFirstIndex] = x;

        mLastY[mFirstIndex] = y;

        }

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private void computeCurrentSpeedInInchesPerSecond()

      {

      long firstTime = mLastT[mFirstIndex];

      long lastTime  = mLastT[mLastIndex];

      float fX = mLastX[mFirstIndex];

      float fY = mLastY[mFirstIndex];

      float lX = mLastX[mLastIndex];

      float lY = mLastY[mLastIndex];

      long timeDiff = lastTime-firstTime;

      mLastIndex = 0;

      mFirstIndex= 0;

      mCurrRotSpeed = timeDiff>0 ? 1000*retFingerDragDistanceInInches(fX,fY,lX,lY)/timeDiff : 0;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private float retFingerDragDistanceInInches(float xFrom, float yFrom, float xTo, float yTo)

      {

      float xDist = mScreenWidth*(xFrom-xTo);

      float yDist = mScreenHeight*(yFrom-yTo);

      float distInPixels = (float)Math.sqrt(xDist*xDist + yDist*yDist);

      return distInPixels/mDensity;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private void setUpDragOrRotate(boolean down, float x, float y, int mode)

      {

      if( mode==MODE_DRAG )

        {

        mDragging           = true;

        mBeginningRotation  = false;

        mContinuingRotation = false;

        }

      else

        {

        TwistyObject object = mPreRender.getObject();

        CAMERA_POINT.set2( object==null ? 1.21f : object.getCameraDist() );

        Static4D touchPoint = new Static4D(x, y, 0, 0);

        Static4D rotatedTouchPoint= QuatHelper.rotateVectorByInvertedQuat(touchPoint, mQuat);

        Static4D rotatedCamera= QuatHelper.rotateVectorByInvertedQuat(CAMERA_POINT, mQuat);

        if( object!=null && mMovement!=null && mMovement.faceTouched(rotatedTouchPoint,rotatedCamera,object.getObjectRatio() ) )

          {

          mDragging           = false;

          mContinuingRotation = false;

          if( mode==MODE_ROTATE )

            {

            mBeginningRotation= !mPreRender.isTouchBlocked();

            }

          else if( mode==MODE_REPLACE )

            {

            mBeginningRotation= false;

            if( down )

              {

              int color = mActioner.getCurrentColor();

              mLastCubitFace = mMovement.getTouchedFace();

              float[] point = mMovement.getTouchedPoint3D();

              mLastCubit = object.getCubit(point);

              mPreRender.setTextureMap( mLastCubit, mLastCubitFace, color );

              mLastCubitColor = mActioner.cubitIsLocked(object.getObjectType(),mLastCubit);

              }

            }

          }

        else

          {

          final TwistyActivity act = mAct.get();

          final boolean locked= act.isLocked();

          mDragging           = (!locked || mIsAutomatic);

          mBeginningRotation  = false;

          mContinuingRotation = false;

          if( !mDragging ) mActioner.failedToDrag(act);

          }

        }

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private void drag(float x, float y)

      {

      if( mPointer1!=INVALID_POINTER_ID && mPointer2!=INVALID_POINTER_ID)

        {

        float x2 = (mX2 - mScreenWidth*0.5f)/mScreenMin;

        float y2 = (mScreenHeight*0.5f - mY2)/mScreenMin;

        float angleNow = getAngle(x,y,x2,y2);

        float angleDiff = angleNow-mRotAngle;

        float sinA =-(float)Math.sin(angleDiff);

        float cosA = (float)Math.cos(angleDiff);

        Static4D dragQuat = QuatHelper.quatMultiply(new Static4D(0,0,sinA,cosA), mQuat);

        mTemp.set(dragQuat);

        mRotAngle = angleNow;

        float distNow  = (float)Math.sqrt( (x-x2)*(x-x2) + (y-y2)*(y-y2) );

        float distQuot = mInitDistance<0 ? 1.0f : distNow/ mInitDistance;

        mInitDistance = distNow;

        TwistyObject object = mPreRender.getObject();

        if( object!=null ) object.setObjectRatio(distQuot);

        }

      else

        {

        Static4D dragQuat = QuatHelper.quatMultiply(QuatHelper.quatFromDrag(mX-x,y-mY), mQuat);

        mTemp.set(dragQuat);

        }

      mPreRender.setQuatOnNextRender();

      mX = x;

      mY = y;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private void finishRotation()

      {

      computeCurrentSpeedInInchesPerSecond();

      int angle = mPreRender.getObject().computeNearestAngle(mCurrentAxis,mCurrentAngle, mCurrRotSpeed);

      mPreRender.finishRotation(angle);

      mPreRender.rememberMove(mCurrentAxis,mCurrentRow,angle);

      if( angle!=0 )

        {

        TwistyActivity act = mAct.get();

        mActioner.onFinishRotation(act,mCurrentAxis,mCurrentRow,angle);

        }

      mContinuingRotation = false;

      mBeginningRotation  = false;

      mDragging           = true;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private void continueRotation(float x, float y)

      {

      float dx = x-mStartRotX;

      float dy = y-mStartRotY;

      float alpha = dx*mAxisX + dy*mAxisY;

      float x2 = dx - alpha*mAxisX;

      float y2 = dy - alpha*mAxisY;

      float len = (float)Math.sqrt(x2*x2 + y2*y2);

      // we have the length of 1D vector 'angle', now the direction:

      float tmp = mAxisY==0 ? -mAxisX*y2 : mAxisY*x2;

      float angle = (tmp>0 ? 1:-1)*len*mRotationFactor;

      mCurrentAngle = SWIPING_SENSITIVITY*angle;

      mPreRender.getObject().continueRotation(mCurrentAngle);

      addSpeedProbe(x2,y2);

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private void beginRotation(float x, float y)

      {

      mStartRotX = x;

      mStartRotY = y;

      TwistyObject object = mPreRender.getObject();

      int numLayers = object.getNumLayers();

      Static4D touchPoint2 = new Static4D(x, y, 0, 0);

      Static4D rotatedTouchPoint2= QuatHelper.rotateVectorByInvertedQuat(touchPoint2, mQuat);

      Static2D res = mMovement.newRotation(rotatedTouchPoint2,object.getObjectRatio());

      mCurrentAxis = (int)res.get0();

      mCurrentRow  = (int)res.get1();

      computeCurrentAxis( mMovement.getCastedRotAxis(mCurrentAxis) );

      mRotationFactor = mMovement.returnRotationFactor(numLayers,mCurrentRow);

      object.beginNewRotation( mCurrentAxis, mCurrentRow );

      TwistyActivity act = mAct.get();

      mActioner.onBeginRotation(act);

      addSpeedProbe(x,y);

      mBeginningRotation = false;

      mContinuingRotation= true;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private float getAngle(float x1, float y1, float x2, float y2)

      {

      return (float) Math.atan2(y1-y2, x1-x2);

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private void prepareDown(MotionEvent event)

      {

      mPointer1 = event.getPointerId(0);

      mX1 = event.getX();

      mY1 = event.getY();

      mPointer2 = INVALID_POINTER_ID;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private void prepareMove(MotionEvent event)

      {

      int index1 = event.findPointerIndex(mPointer1);

      if( index1>=0 )

        {

        mX1 = event.getX(index1);

        mY1 = event.getY(index1);

        }

      int index2 = event.findPointerIndex(mPointer2);

      if( index2>=0 )

        {

        mX2 = event.getX(index2);

        mY2 = event.getY(index2);

        }

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private void prepareUp(MotionEvent event)

      {

      mPointer1 = INVALID_POINTER_ID;

      mPointer2 = INVALID_POINTER_ID;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private void prepareDown2(MotionEvent event)

      {

      int index = event.getActionIndex();

      if( mPointer1==INVALID_POINTER_ID )

        {

        mPointer1 = event.getPointerId(index);

        mX1 = event.getX(index);

        mY1 = event.getY(index);

        }

      else if( mPointer2==INVALID_POINTER_ID )

        {

        mPointer2 = event.getPointerId(index);

        mX2 = event.getX(index);

        mY2 = event.getY(index);

        }

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private void prepareUp2(MotionEvent event)

      {

      int index = event.getActionIndex();

           if( index==event.findPointerIndex(mPointer1) ) mPointer1 = INVALID_POINTER_ID;

      else if( index==event.findPointerIndex(mPointer2) ) mPointer2 = INVALID_POINTER_ID;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private void actionMove(float x1, float y1, float x2, float y2, int mode)

      {

      float pX = mPointer1 != INVALID_POINTER_ID ? x1 : x2;

      float pY = mPointer1 != INVALID_POINTER_ID ? y1 : y2;

      float x = (pX - mScreenWidth*0.5f)/mScreenMin;

      float y = (mScreenHeight*0.5f -pY)/mScreenMin;

      if( mBeginningRotation )

        {

        if( retFingerDragDistanceInInches(mX,mY,x,y) > ROTATION_SENSITIVITY )

          {

          beginRotation(x,y);

          }

        }

      else if( mContinuingRotation )

        {

        continueRotation(x,y);

        }

      else if( mDragging )

        {

        drag(x,y);

        }

      else

        {

        setUpDragOrRotate(false,x,y,mode);

        }

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private void actionDown(float x, float y, int mode)

      {

      mX = (x -  mScreenWidth*0.5f)/mScreenMin;

      mY = (mScreenHeight*0.5f - y)/mScreenMin;

      setUpDragOrRotate(true,mX,mY,mode);

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private void actionUp()

      {

      if( mContinuingRotation )

        {

        finishRotation();

        }

      if( mLastCubitColor>=0 )

        {

        mPreRender.setTextureMap( mLastCubit, mLastCubitFace, mLastCubitColor );

        mLastCubitColor = -1;

        }

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private void actionDown2(float x1, float y1, float x2, float y2)

      {

      mRotAngle = getAngle(x1,-y1, x2,-y2);

      mInitDistance = -1;

      mX = (x1 - mScreenWidth*0.5f )/mScreenMin;

      mY = (mScreenHeight*0.5f - y1)/mScreenMin;

      if( mBeginningRotation )

        {

        mContinuingRotation = false;

        mBeginningRotation  = false;

        mDragging           = true;

        }

      else if( mContinuingRotation )

        {

        finishRotation();

        }

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    private void actionUp2(boolean p1isUp, float x1, float y1, boolean p2isUp, float x2, float y2)

      {

      if( p1isUp )

        {

        mX = (x2 -  mScreenWidth*0.5f)/mScreenMin;

        mY = (mScreenHeight*0.5f - y2)/mScreenMin;

        }

      if( p2isUp )

        {

        mX = (x1 -  mScreenWidth*0.5f)/mScreenMin;

        mY = (mScreenHeight*0.5f - y1)/mScreenMin;

        }

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

// PUBLIC API

///////////////////////////////////////////////////////////////////////////////////////////////////

    public ObjectControl(TwistyActivity act, ObjectSurfaceView view, ObjectStateActioner actioner)

      {

      mIsAutomatic = false;

      mLastCubitColor = -1;

      mCurrRotSpeed   = 0.0f;

      mLastX = new float[NUM_SPEED_PROBES];

      mLastY = new float[NUM_SPEED_PROBES];

      mLastT = new long[NUM_SPEED_PROBES];

      mFirstIndex =0;

      mLastIndex  =0;

      DisplayMetrics dm = new DisplayMetrics();

      act.getWindowManager().getDefaultDisplay().getMetrics(dm);

      mDensity = dm.densityDpi;

      mPreRender = new ObjectPreRender(view,actioner);

      mAct = new WeakReference<>(act);

      mActioner = actioner;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public void setScreenSize(int width, int height)

      {

      mScreenWidth = width;

      mScreenHeight= height;

      mScreenMin = Math.min(width, height);

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public void initialize()

      {

      mPointer1 = INVALID_POINTER_ID;

      mPointer2 = INVALID_POINTER_ID;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public void setQuat()

      {

      mQuat.set(mTemp);

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public Static4D getQuat()

      {

      return mQuat;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public void setMovement(Movement movement)

      {

      mMovement = movement;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public ObjectPreRender getPreRender()

      {

      return mPreRender;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public void prepareDown()

      {

      mIsAutomatic = true;

      mPointer1 = 0;

      mPointer2 = INVALID_POINTER_ID;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public void prepareDown2()

      {

      mPointer2 = 0;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public void prepareUp()

      {

      mIsAutomatic = false;

      mPointer1 = INVALID_POINTER_ID;

      mPointer2 = INVALID_POINTER_ID;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public void prepareMove(float x1, float y1, float x2, float y2)

      {

      mX1 = x1;

      mY1 = y1;

      mX2 = x2;

      mY2 = y2;

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public boolean onTouchEvent(MotionEvent event, int mode)

      {

      int action = event.getActionMasked();

      switch(action)

         {

         case MotionEvent.ACTION_DOWN        : prepareDown(event);

                                               actionDown(mX1, mY1, mode);

                                               break;

         case MotionEvent.ACTION_MOVE        : prepareMove(event);

                                               actionMove(mX1, mY1, mX2, mY2, mode);

                                               break;

         case MotionEvent.ACTION_UP          : prepareUp(event);

                                               actionUp();

                                               break;

         case MotionEvent.ACTION_POINTER_DOWN: prepareDown2(event);

                                               actionDown2(mX1, mY1, mX2, mY2);

                                               break;

         case MotionEvent.ACTION_POINTER_UP  : prepareUp2(event);

                                               boolean p1isUp = mPointer1==INVALID_POINTER_ID;

                                               boolean p2isUp = mPointer2==INVALID_POINTER_ID;

                                               actionUp2(p1isUp, mX1, mY1, p2isUp, mX2, mY2);

                                               break;

         }

      return true;

      }

}

  void initializeObject(int[][] moves)

  synchronized void removeRotationNow()

  long finishRotationNow(EffectListener listener, int nearestAngleInDegrees)

  synchronized long addNewRotation( int axis, int rowBitmap, int angle, long durationMillis, EffectListener listener )

  void continueRotation(float angleInDegrees)

    {

    mRotationAngleStatic.set0(angleInDegrees);

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  synchronized void beginNewRotation(int axis, int row )

    {

    if( axis<0 || axis>=NUM_AXIS )

      {

      android.util.Log.e("object", "invalid rotation axis: "+axis);

      return;

      }

    if( row<0 || row>=mNumLayers )

      {

      android.util.Log.e("object", "invalid rotation row: "+row);

      return;

      }

    mRotAxis     = axis;

    mRotRowBitmap= computeBitmapFromRow( (1<<row),axis );

    mRotationAngleStatic.set0(0.0f);

    mRotationAxis.set( mAxis[axis] );

    mRotationAngle.add(mRotationAngleStatic);

    mRotateEffect.setMeshAssociation( mRotRowBitmap<<(axis*ObjectType.MAX_OBJECT_SIZE) , -1);

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  void setTextureMap(int cubit, int face, int newColor)

  void resetAllTextureMaps()

  void releaseResources()

  synchronized void restorePreferences(SharedPreferences preferences)

  void savePreferences(SharedPreferences.Editor editor)

  void recomputeScaleFactor(int scrWidth)

  void createTexture()

  void setObjectRatio(float sizeChange)

  float getObjectRatio()

  boolean isSolved()

    if( mSolvedFunctionIndex==0 ) return isSolved0();

    if( mSolvedFunctionIndex==1 ) return isSolved1();

    if( mSolvedFunctionIndex==2 ) return isSolved2();

    if( mSolvedFunctionIndex==3 ) return isSolved3();

    return false;

  int getCubit(float[] point3D)

    float dist, minDist = Float.MAX_VALUE;

    int currentBest=-1;

    float multiplier = returnMultiplier();

    point3D[0] *= multiplier;

    point3D[1] *= multiplier;

    point3D[2] *= multiplier;

    for(int i=0; i<NUM_CUBITS; i++)

      {

      dist = CUBITS[i].getDistSquared(point3D);

      if( dist<minDist )

        {

        minDist = dist;

        currentBest = i;

        }

      }

    return currentBest;

  int computeNearestAngle(int axis, float angle, float speed)

    int[] basicArray = getBasicAngle();

    int basicAngle   = basicArray[axis>=basicArray.length ? 0 : axis];

    int nearestAngle = 360/basicAngle;

    int tmp = (int)((angle+nearestAngle/2)/nearestAngle);

    if( angle< -(nearestAngle*0.5) ) tmp-=1;

    if( tmp!=0 ) return nearestAngle*tmp;

    return speed> 1.2f ? nearestAngle*(angle>0 ? 1:-1) : 0;

  float getCameraDist()

    return mCameraDist;

///////////////////////////////////////////////////////////////////////////////////////////////////

// INTERNAL API - those are called from 'effects' package

  public void randomizeNewScramble(int[][] scramble, Random rnd, int curr, int total)

    mScrambler.randomizeNewScramble(scramble,rnd,curr,total);

  public int getNodeSize()

    return mNodeSize;

  public Static4D getRotationQuat()

      return mQuat;

///////////////////////////////////////////////////////////////////////////////////////////////////

// PUBLIC API

  public int getCubitFaceColorIndex(int cubit, int face)

    Static4D texMap = mMesh.getTextureMap(NUM_FACE_COLORS*cubit + face);

    int x = (int)(texMap.get0()/texMap.get2());

    int y = (int)(texMap.get1()/texMap.get3());

    return (mNumTexRows-1-y)*NUM_STICKERS_IN_ROW + x;

  public int getNumLayers()

    return mNumLayers;

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  public void apply(Effect effect, int position)

    {

    mEffects.apply(effect, position);

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  public void remove(long effectID)

    {

    mEffects.abortById(effectID);

  public synchronized void solve()

    for(int i=0; i<NUM_CUBITS; i++)

      {

      CUBITS[i].solve();

      mMesh.setEffectAssociation(i, CUBITS[i].computeAssociation(), 0);

      }